47 lines
No EOL
896 B
PHP
47 lines
No EOL
896 B
PHP
<?php
|
|
|
|
function ip4_loopback()
|
|
{
|
|
return inet_pton("127.0.0.1");
|
|
}
|
|
|
|
function ip6_loopback()
|
|
{
|
|
return inet_pton("::1");
|
|
}
|
|
|
|
function ip_address($ip)
|
|
{
|
|
$ipAddr = inet_pton($ip);
|
|
if ($ipAddr == false) {
|
|
throw new Exception("invalid ip address");
|
|
}
|
|
|
|
return $ipAddr;
|
|
}
|
|
|
|
function is_loopback($ip)
|
|
{
|
|
$ipAddr = ip_address($ip);
|
|
return $ipAddr == ip4_loopback() || $ipAddr == ip6_loopback();
|
|
}
|
|
|
|
function get_external_ip()
|
|
{
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, "http://ident.me");
|
|
curl_setopt($ch, CURLOPT_PORT, 80);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
|
|
$result = curl_exec($ch);
|
|
curl_close($ch);
|
|
|
|
if ($result == false) {
|
|
throw new Exception("request to ident.me failed");
|
|
} else if (inet_pton($result) == false) {
|
|
throw new Exception("ident.me respond invalid ip");
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
?>
|